Steam-boiler.



No. 821,558. PATENTED MAY 22, 1906. H. W. WAGENER.

STEAM BOILER.

APPLICATION FILED FEB. 27,1906.

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ratented lvlay 22, 1906;

Application filed February 27, 1906. Serial No. 303,242.

To all whom, t Wbctz/ con/cern,.-

Be iit known that I, HEINRioI-r W. WAGE- NER, manufacturer, a subject of the Russian Emperor, residing at Moscow, in the Empire of Russia, have invented certain new and useful Improvements in Steam-Boilers, of which the following is afull, clear, and exact description.

The present invention relates to improvements in that class of steam-boilers in which the latter consist of a system of water-tubes above which a receiver for steam and water is provided. In these boilers the ends of the water-tubes are connected to water-chambers, and the whole system of tubes forms a Latin U, carrying the fire-grate or other means lfor the production of the necessaryT heat between its shanks. At present the arrangement of these boilers is suoli that the hot gases pass over the fire-bridge, through the spaces between the tubes, and then downward into a Hue provided below the system of tubes. A disadvantage of these boilers consists in the fact that of those portions of the tubes which lie above the fire-grate only a small surface is subjected to the influence of the hot gases, because the current of them is directed diagonally over the fire-bridge.

The object of the present invention is to avoid this disadvantage by providing a body of brickwork immediately above the upper-v most row of the tubes, and that in such a manner that one part of the gases rising from the fire-grate is caused to pass over the firebridge and through the spaces between the tubes, while the other part is to take its way `vertically through the spaces between the tubes and thereafter through an opening left between the front wall of the boiler-brickwork and the brickwork body. The gases pass then horizontally through a space left between the said brickwork body and the steam-reservoir and turn finally downward through a second opening provided at the rear end of the brickwork body. The gases having thus passed over the brickwork body yare then `mixed with other gases coming from the fire-bridge and turning downward, and `the whole mass of gases will then heat the remaining portions of the water-tubes, as usual.

In the annexed drawings two kinds of construction of the present improved steamboiler vare illustrated.

Figure 1 is a vertical longitudinal section of the one construction, and Fig. 2 a similar section of the modified form.

In Fig, 1 the water-tubes a are arranged to form a Latin U, and these tubes connect two water-chambers t and c, suitably supported by the brickwork of the boiler. A connection CZ serves to lead the mixture of steam and water entering the upper chamber into the reservoir c, which is connected to the lower chamber c by means of outer tubes y". The hre-grate g, bridge h, and ash-pit i are arranged between the shanks of the system of tubes a, as shown. Immediately above the upper shank of the system of tubes a body c of iireproof material (e. g., fireproof brickwork) is provided, and between this body and the receiver e remains a channel l, which the fire-gases enter through the opening m and leave through anotheropening n. As indicated by the arrows, one part of the gases rising from the grate g passes immediately over the fire-bridge 7L into the back chamber o,4

while the other part rises vertically through the system of tubes and the opening m. These lattergases then pass through the channel l and opening n, whereupon they are mixed with other gases entering the chamber o from the fire-bridge, The whole of the gases thus mixed now passes along the outer surface of the tubes a and into a flue p, which leads them to the chimney. In order to support the curved part of the system of tubes, the feet q are provided resting with theirlower curved ends on iron plates embedded into the basement of the boiler, and the outer row of tubes rests on the upper ends of these feet. In order to support also the inner tubes, the pieces r are inserted.

In the modified form of the boiler shown by Fig. 2 a third water-chamber s is provided, and the tubes, which in this instance are straight, form two separate systems. The necessary heat is produced. by means of oil. The required apparatuses for feeding this fuel are not shown. It may be remarked that a superheater for steam can be located within the channel Z.

Having now described and ascertained the nature of my invention and in what manner the same is to be performed, what I claim 1s- 1. In a steam-boiler an arrangement of water-tubes similar to a Latin U water-chainbers connected by said tubes, a fire-bridge IOO and means for producing heat, both provided between the shanks of the system of tubes, a body of iireproof substance arranged to permit only one part of the hot gases produced between the Shanks of the water-tubes to pass over the fire-bridge, a branch channel provided above the said fireproof body, openings adapted to lead hot gases into and out of such branch channel, gas-passages adapted to lead the hot gases along the tubes and to the chimney, substantially as set forth.

2. In a steam-boiler an arrangement of water-tubes similar to aLatin U, water-chambers connected by said tubes, a fire-bridge and means for producing heat, both provided between the Shanks ofthe sytem of tubes, a body of reproofsubstance arranged to permit only one part of the hot gases produced between the shanks of the water-tubes to pass over lthe fire-bridge, a branch channel provided above the said fireproof body, openings adapted to lead hot gases into and out of such branch channel, gas-passages adapted to lead the hot gases along the tubes and to the chimney, a reservoir located above the fireproof body, and forming the upper limitation of the branch channel, substantially as set forth.

3. In a steam-boiler a system of watertubes, each tube being bent into a shape similar to aLatin U ,two water-chambers, connected by said tubes, a fire-bridge and means for producing heat both provided between the Shanks of the system of tubes, a body of fireproof substance arranged to permit only one part of the hot gases, produced between the shanks of the water-tubes, to pass over the hre-bridge, a branch channel provided above the said fireproof body, openings adapted to lead hot gases into and out of such branch channel, gas-passages adapted to lead the hot gases along the tubes and to the chimney, substantially as set forth.

4. In a steam-boiler a system of watertubes, each tube being bent into a shape similar to a Latin U, two water-chambers connected by said tubes, a fire-bridge and means for producing heat both provided between the Shanks of the system of tubes, a body of fireproof substance arranged to permit only. one part of the hot gases produced between the Shanks of the water-tubes to pass over the fire-brid ge a branch channel provid ed above the said fireproof body, openings adapted to lead hot gases into and out of such branch channel, gas-passages adapted to lead the hot gases along the tubes and to the chimney, a reservoir located above the fireproof body, and forming the upper limitation of the branch channel, substantially as set forth,

5, In a steam-boiler a system ofwatertubes, each tube being bent into a shape similar to a Latin U, two water-chambers connected by said tubes, means for supporting the curved portions of the tubes, a fire-bridge sarees and means for producing heat, both provided between the Shanks of the system of tubes, a body y of repr'oof substance arranged to permit only one part of the hot gases, produced between the shanks of the water-tubes to pass over the iire-brid ge, a branch channel provided above the said ireproof body, openings adapted to lead hot gases into and out of sucn branch channel, gas-passages adapted to lead the hot gases along the tubes and to the chimney, substantially as set forth.

6. In a steam-boiler a system of watertubes, each tube being bent into a shape similar to a Latin U, two water-chambers connected by said tubes, means for supporting the curved portions of the tubes, a fire-bridge and means for producing heat both provided between the shanks of the system of tubes, a body 0i fireproof substance arranged to permit only one part of the hot gases, produced between the shanks of the water-tubes to pass over the fire-bridge, a branch channel provided above the said iireproof body, openings adapted to lead hot gases into and out of such branch channel, gas-passages adapted to lead the hot gases along the tubes and to the chimney, a reservoir located above the fireproof body, and forming the upper limitation of the branch channel, substantially as set forth.

7. In a steam-boiler a system of watertubes, each tube being bent into a shape similar to a Latin U, two water-chambers connected by said tubes, supporting-feet the upper ends of which being in engagement with the outer row of tubes while the lower ones movably rest on the basement ofthe boiler, other Supporting-pieces located between the inner rows of tubes, a fire-bridge and means for producing heat both provided between the shanks of the system of tubes, a body of hreproof substance arranged to permit only one part of the hot gases, produced between the Shanks of the water-tubes, to pass over the fire-bridge, a branch channel. provided above the said reproof body, openings adapted to lead hot gases into and out of sucn branch channel, gas-passages adapted to lead the hot gases along the tubes and to the chimney, substantially as set forth.

8. In a steam-boiler a System of watertubes, each tube being bent into a shape similar to a Latin U, two water-chambers connected by said tubes, supporting-feet, the upper ends of which being in engagement with the outer row of tubes while the lower ones movably rest on the basement of the boiler, other supporting-pieces located between the inner rows of tubes, a fire-bridge and means for producing heat, both provided between the Shanks of the system of tubes, a body of fire- IOO IOS

IIO

proof substance arranged to permit only one l 5 reservoir located above the 'reproof body,

the said 'reproof body, openings adapted to In Witness whereof I subscribe my signa- ]ead hot gases mto and out ot such branch ture 1n presence ot two wltnesses.

channel 0as-passages adapted to lead the hot w A v gases alolg the tubes and to the chimney, a I HEINRICH W' WAGENER Witnesses: and forming the upper limitation of the, HUGO LINDEMANN, branch channel, substantially as set forth. GUsTAVE HARTWIG. 

